Book-holding device



lzltented May 27, 1919.

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UNITED kSTATES PA`f5p].;lw OFF1 HALBERT H. HITcHcocK, or PITTSBURGH,

Doon-HOLDING DEvlI'cE;

To all whomzt may concern.' o

Be it lmownthat I, HAILBERT K.- HITCH- COCK, a citizen vof the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have made a new and useful Invention in Door- Holdin Devices,of which the following is a speci cation.

The invention relates to attachments foi` doors, and particularly for doors for uso on motor' vehicles, in which the vibration of the machine frequently causes rattling and squeaking. A door which does notiit tightly is liable-to rattle due to the vibra-l tion, while a tight fit is difficult to secure.y and isv liable to causev squeaking whenthely engaging surfaces move past each vother slightly. The primary object of the present inventlon is to provide a device which will rigidly support the free end of the door v when closed upon relatively large wearing surfaces, with the parts so arranged that the surfaces will be brought into engage- -ment or disengaged'with a minimum amount of friction, thus reducing the wear and effort necessary to move the parts, and insuring that the parts will remain in adjustment during the life of the door. Further objects of the invention `'are to provide a device in which breakage is avoided, which rigidly supports the door against any downward movement whatever, which relieves the' hinges of .the v'vearl incident to the lvibration -of the machine, and which applies yielding force tending to'open the door andkeep this door latch or lock tight.

Certain embodiments of the invention are illustrated in the accompanying'drawings wherein Figure 1 is a perspective view showl ing the application of one part of the -device to the door jamb, Fig. 2 is a perspective view showing the application of the othei` part of the` device to the door, Fig. -3 is a transverse section on the line III-IIIof Fig. 6, Fig. 4 is a face view of part of the device shown in Fig. 1 with the cover plate removed, Fig. 5 is a section on the line V-V of Fig. 4, Fig. 6 is a view similar to Fig. 4 with the wedge portion of the device shown in section in an operative position, and Fig. 7 is a face view of a modification of one of the parts of the device, the holding screw JIl or the adjusting spring being shown insection.

Referring to the part of the device shown Specimation of Letters Patent.

ksprlng rENNsYLvANIA, AssIGNoB. or ONE-HALF VTo .IoHN`n JOHNSON, or PITTSBURGH, PENNSYLVANIA. A

l2, such casing being closed by the plate 3,

securedto the casing by means of the screw `4. The screws 5 engage `thedoor jamb and serve to secure the casing in position. o door 6 is provided with a plate`7 secured inposition by means of. the screws 8 and carrying the wedge or spreader 'member 9. The plate 7 and the casing 2 are so positioned relatively that when the door is closed the wedge l9 enters the slot 10 (Fig. 1). The door jamb is provided with the usual overlapping strip 11,while.'the,.door is provided with a corresponding strip 12 (Fig. 3).

Mounted in the casing' 2 are a pairv of toggle plates 13 andll, such platesl having cylindrical Ybearingportions 15 at their ends which engage corresponding recesses in the ends of the casing. The plates are mounted The v Patented May 27.11919. Application led July 12, 1 9`18. Serial No. 244,527. l l I so as to swing back and forth and are yieldheld in-forward position'by the leaf 16. The upper plate 13 is provided with a projecting pin 17 and `on this pin is mounted a relativelystifl' spring 18, the upper end of whichis held ina slot 19' in the plate, while the lower portion 2O constitutes ai bearing surface as hereafter set forth. The lower plate has' a whose upper surface constitutes a bearing surface in opposition to the spring portion 20. The twoplates are curved at their meeting edges 22, and roll on each other when the plates are moved in and out. The plates are thus securely held in position until the cover plate of the casing is removed, at

ngly.

.which time the plates may be removed by lifting them out of the casing.

In operation, the closing of the door brings the wedge 9 into the spaceE between ,the opposing bearing members 20 and V21 as indicated in Fig. 6u The spring 16 serves to keep the plates in the proper position to receive the wedge 9,- and by resisting the inward `movement ofthe plates and applying pressure on the 'wedge tends tovopen the door. This application of pressure holds the latch of the door-lock tight and prevents any swinging movement of the door upon its hinges. As a result there is no rattling of the door or the lock such as ordinarily occurs when lost motion is'present after the 'latching of the lock. The wedge 9 is'also firmly but yieldingly clamped or held between the opposing bearing members 20 and member,

y bearing members arranged Y 1,305,212 y u bearing members arranged to receive the spreadenmember between them. `and apply an increasing pressure thereto at right angles to the plane of movementv of the the door member, moves spreader member between them and apply an increasing pressurethereto at right angles to the plane of movement of the callyin one direction,

` ing unyielding.v

spreader member as the door member moves to closed position, and spring means permitting the spreadermember to move vertithe support of the spreader member in the reverse direction be- 3, In combinationk 1n a door' holder foruse between a door member and a jamb y member, a tongue carried by one of said members, a pair of opposing plates pivoted -to the other member vlso as to approach as they move to therear` and having` bearing faces in posltion. to receive the tongue be- ,tween them, and having the bearing face of one plate attened, and spring means for holding the plates' in advanced position,

Y 5 the said faces being inclined toward each other and adapted to rollover the opposite faces of the wedge as the plates are carried to the rear by the tongue until the wedge engages the iattened portion of said face.` i

4. In combination ink a door holder for use between a doormember and a jamb member, a tongue carried by one` of said members, a pair of` opposing toggle plates pivoted to the other member and having bearing faces in position to receive the tongue between them, means for holdingthe plates `yieldingly in advanced position,- and spring means permitting the movement of one bearing face away from the other,

5. In combination in a door holder lfor use between a door member and a jamb member, a tongue carried by one of saidj members, a pair of opposing toggle plates pivoted'. to the other member so as to approach as they moveto the-rear and having bearing faces in position to receive the tongue between them, and means for holding the plates y-ieldingly in,advanced position, one of said Abearing facesbelng yield-l ably mounted for movement transversely of the -path of movement of the tongue'.

6.- In combination in a door holder for use between a door member and a jamb member, a tongue carried by one of said members, a pair of opposing 'toggle plates pivoted to the other member and adapted and springl means permit-V receive the.

casing, the said tongue to approach as they move to the rear and having bearing faces in position to\receivev 'the tongue between them,

one of said faces being spring supported, and the other rig- .idly supported, and means for holding the plates yieldingly in `advanced position.

7. In combination in a door holder, a cas# ing for'mounting on the door or jamb member, a pair of toggle members mounted in the casing having opposing bearing faces and adapted to move backl and forth in the casing, with'the bearing vfaces approaching each other as the members move to the rear, :means for yieldingly holding the said pair ber, a pair of toggle members mounted inthe casinghaving opposing bearing faces,`

one of which is flattened, arranged to move back vand forth in the casing on curved paths and approach each other as they move back, meansfor. yieldingly holding the pair of members in advanced position, yielding means whereby one of said bearing faces may moye away from the other, and a tonguemember for mounting on the other door or jamb member and adapted to enter `the space betweensaid bearing faces, engaging them with rolling friction, as it moves the said 'pair of members to the rear in the rear position engaging face. v .i

9, In combinationin a door holding device a dapted to cooperate between a swinging door member and a `jamb member, a spreader device adaptedto be carried by one of said members and a coperatingA device adapted to receive the spreader device and carried by the other member, saiddevice inclu'ding toggle ,meansV tending to open the door and to apply yielding pressure to the u'pper side of the spreader tending to hold the free edge of the door against upward movement, while rigidly holding it against downward movement.

10. In combination in a door holding device adapted to coperate between a swinging door member and Ja jamb member, a spreader device adapted to be carriedby one of said members, anda coperating device adapted to receive the spreader device and carried by the other'member, said device including toggle means and spring means applying pressuretendin to open the door and spring pressure tendlng to prevent upward movement of thespreader.

the said flattened when in extreme iso 

